41 lines
866 B
Rust
41 lines
866 B
Rust
use std::sync::{Arc, Mutex}; // Rc is not thread safe, but Arc is. (Atomic Reference Count)
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use std::thread;
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fn single_thread_example() {
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let m = Mutex::new(5);
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{
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let mut num = m.lock().unwrap();
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*num = 6;
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} // Reference to mutex value goes out of scope, lock is released
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println!("m = {:?}", m);
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}
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fn multi_thread_example() {
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let counter = Arc::new(Mutex::new(0));
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let mut handles = vec![];
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for _ in 0..10 {
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let counter = Arc::clone(&counter);
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let handle = thread::spawn(move || {
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let mut num = counter.lock().unwrap();
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*num += 1;
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});
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handles.push(handle);
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}
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for handle in handles {
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handle.join().unwrap();
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}
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println!("Result: {}", *counter.lock().unwrap());
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}
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fn main() {
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single_thread_example();
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multi_thread_example();
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}
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